diff options
Diffstat (limited to 'javaparser-core/src/main/java/com/github/javaparser/ast/stmt/IfStmt.java')
-rw-r--r-- | javaparser-core/src/main/java/com/github/javaparser/ast/stmt/IfStmt.java | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/javaparser-core/src/main/java/com/github/javaparser/ast/stmt/IfStmt.java b/javaparser-core/src/main/java/com/github/javaparser/ast/stmt/IfStmt.java new file mode 100644 index 000000000..f873ff89a --- /dev/null +++ b/javaparser-core/src/main/java/com/github/javaparser/ast/stmt/IfStmt.java @@ -0,0 +1,260 @@ +/* + * Copyright (C) 2007-2010 JĂșlio Vilmar Gesser. + * Copyright (C) 2011, 2013-2016 The JavaParser Team. + * + * This file is part of JavaParser. + * + * JavaParser can be used either under the terms of + * a) the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * b) the terms of the Apache License + * + * You should have received a copy of both licenses in LICENCE.LGPL and + * LICENCE.APACHE. Please refer to those files for details. + * + * JavaParser is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + */ +package com.github.javaparser.ast.stmt; + +import com.github.javaparser.ast.AllFieldsConstructor; +import com.github.javaparser.ast.expr.BooleanLiteralExpr; +import com.github.javaparser.ast.expr.Expression; +import com.github.javaparser.ast.nodeTypes.NodeWithCondition; +import com.github.javaparser.ast.observer.ObservableProperty; +import com.github.javaparser.ast.visitor.GenericVisitor; +import com.github.javaparser.ast.visitor.VoidVisitor; +import java.util.Optional; +import static com.github.javaparser.utils.Utils.assertNotNull; +import com.github.javaparser.ast.Node; +import com.github.javaparser.ast.visitor.CloneVisitor; +import com.github.javaparser.metamodel.DerivedProperty; +import com.github.javaparser.metamodel.IfStmtMetaModel; +import com.github.javaparser.metamodel.JavaParserMetaModel; +import javax.annotation.Generated; +import com.github.javaparser.TokenRange; +import com.github.javaparser.metamodel.OptionalProperty; +import java.util.function.Consumer; + +/** + * An if-then-else statement. The else is optional. + * <br/>In <code>if(a==5) hurray() else boo();</code> the condition is a==5, + * hurray() is the thenStmt, and boo() is the elseStmt. + * + * @author Julio Vilmar Gesser + */ +public final class IfStmt extends Statement implements NodeWithCondition<IfStmt> { + + private Expression condition; + + private Statement thenStmt; + + @OptionalProperty + private Statement elseStmt; + + public IfStmt() { + this(null, new BooleanLiteralExpr(), new ReturnStmt(), null); + } + + @AllFieldsConstructor + public IfStmt(final Expression condition, final Statement thenStmt, final Statement elseStmt) { + this(null, condition, thenStmt, elseStmt); + } + + /** + * This constructor is used by the parser and is considered private. + */ + @Generated("com.github.javaparser.generator.core.node.MainConstructorGenerator") + public IfStmt(TokenRange tokenRange, Expression condition, Statement thenStmt, Statement elseStmt) { + super(tokenRange); + setCondition(condition); + setThenStmt(thenStmt); + setElseStmt(elseStmt); + customInitialization(); + } + + @Override + @Generated("com.github.javaparser.generator.core.node.AcceptGenerator") + public <R, A> R accept(final GenericVisitor<R, A> v, final A arg) { + return v.visit(this, arg); + } + + @Override + @Generated("com.github.javaparser.generator.core.node.AcceptGenerator") + public <A> void accept(final VoidVisitor<A> v, final A arg) { + v.visit(this, arg); + } + + @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") + public Expression getCondition() { + return condition; + } + + @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") + public Optional<Statement> getElseStmt() { + return Optional.ofNullable(elseStmt); + } + + @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") + public Statement getThenStmt() { + return thenStmt; + } + + @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") + public IfStmt setCondition(final Expression condition) { + assertNotNull(condition); + if (condition == this.condition) { + return (IfStmt) this; + } + notifyPropertyChange(ObservableProperty.CONDITION, this.condition, condition); + if (this.condition != null) + this.condition.setParentNode(null); + this.condition = condition; + setAsParentNodeOf(condition); + return this; + } + + /** + * Sets the elseStmt + * + * @param elseStmt the elseStmt, can be null + * @return this, the IfStmt + */ + @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") + public IfStmt setElseStmt(final Statement elseStmt) { + if (elseStmt == this.elseStmt) { + return (IfStmt) this; + } + notifyPropertyChange(ObservableProperty.ELSE_STMT, this.elseStmt, elseStmt); + if (this.elseStmt != null) + this.elseStmt.setParentNode(null); + this.elseStmt = elseStmt; + setAsParentNodeOf(elseStmt); + return this; + } + + @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") + public IfStmt setThenStmt(final Statement thenStmt) { + assertNotNull(thenStmt); + if (thenStmt == this.thenStmt) { + return (IfStmt) this; + } + notifyPropertyChange(ObservableProperty.THEN_STMT, this.thenStmt, thenStmt); + if (this.thenStmt != null) + this.thenStmt.setParentNode(null); + this.thenStmt = thenStmt; + setAsParentNodeOf(thenStmt); + return this; + } + + @Override + @Generated("com.github.javaparser.generator.core.node.RemoveMethodGenerator") + public boolean remove(Node node) { + if (node == null) + return false; + if (elseStmt != null) { + if (node == elseStmt) { + removeElseStmt(); + return true; + } + } + return super.remove(node); + } + + @Generated("com.github.javaparser.generator.core.node.RemoveMethodGenerator") + public IfStmt removeElseStmt() { + return setElseStmt((Statement) null); + } + + /** + * This method returns true if the then branch (which should be always present) is a block statement. + */ + @DerivedProperty + public boolean hasThenBlock() { + return thenStmt instanceof BlockStmt; + } + + /** + * This method returns true if the If Statement has an else branch and that branch is a block statement. + */ + @DerivedProperty + public boolean hasElseBlock() { + return elseStmt instanceof BlockStmt; + } + + /** + * This method returns true if the If Statement has an else branch and that branch is another If Statement. + */ + @DerivedProperty + public boolean hasCascadingIfStmt() { + return elseStmt instanceof IfStmt; + } + + /** + * This method returns true if the If Statement has an else branch. + */ + @DerivedProperty + public boolean hasElseBranch() { + return elseStmt != null; + } + + @Override + @Generated("com.github.javaparser.generator.core.node.CloneGenerator") + public IfStmt clone() { + return (IfStmt) accept(new CloneVisitor(), null); + } + + @Override + @Generated("com.github.javaparser.generator.core.node.GetMetaModelGenerator") + public IfStmtMetaModel getMetaModel() { + return JavaParserMetaModel.ifStmtMetaModel; + } + + @Override + @Generated("com.github.javaparser.generator.core.node.ReplaceMethodGenerator") + public boolean replace(Node node, Node replacementNode) { + if (node == null) + return false; + if (node == condition) { + setCondition((Expression) replacementNode); + return true; + } + if (elseStmt != null) { + if (node == elseStmt) { + setElseStmt((Statement) replacementNode); + return true; + } + } + if (node == thenStmt) { + setThenStmt((Statement) replacementNode); + return true; + } + return super.replace(node, replacementNode); + } + + @Override + @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") + public boolean isIfStmt() { + return true; + } + + @Override + @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") + public IfStmt asIfStmt() { + return this; + } + + @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") + public void ifIfStmt(Consumer<IfStmt> action) { + action.accept(this); + } + + @Override + @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") + public Optional<IfStmt> toIfStmt() { + return Optional.of(this); + } +} |